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  2. Hydrophobicity scales - Wikipedia

    en.wikipedia.org/wiki/Hydrophobicity_scales

    The ratio gives the relative hydrophobicity scale for individual amino acids. Computation was trained on high resolution protein crystal structures. This quantitative descriptor for microenvironment was derived from the octanol-water partition coefficient, (known as Rekker's Fragmental Constants) widely used for pharmacophores. This scale well ...

  3. Partition coefficient - Wikipedia

    en.wikipedia.org/wiki/Partition_coefficient

    The hydrophobicity of a compound can give scientists an indication of how easily a compound might be taken up in groundwater to pollute waterways, and its toxicity to animals and aquatic life. [34] Partition coefficient can also be used to predict the mobility of radionuclides in groundwater. [ 35 ]

  4. Contact angle - Wikipedia

    en.wikipedia.org/wiki/Contact_angle

    Cloth, treated to be hydrophobic, shows a high contact angle. The theoretical description of contact angle arises from the consideration of a thermodynamic equilibrium between the three phases: the liquid phase (L), the solid phase (S), and the gas or vapor phase (G) (which could be a mixture of ambient atmosphere and an equilibrium concentration of the liquid vapor).

  5. Craig plot - Wikipedia

    en.wikipedia.org/wiki/Craig_plot

    The Craig plot, named after Paul N. Craig, is a plot of two substituent parameters (e.g. Hansch-Fujita π constant and sigma constant) used in rational drug design. [1] Two most used forms of a Craig plot are plotting the sigma constants of the Hammett equation versus hydrophobicity; plotting the steric terms of the Taft equation against ...

  6. Octanol-water partition coefficient - Wikipedia

    en.wikipedia.org/wiki/Octanol-water_partition...

    The n-octanol-water partition coefficient, K ow is a partition coefficient for the two-phase system consisting of n-octanol and water. [1] K ow is also frequently referred to by the symbol P, especially in the English literature.

  7. Hydrophobe - Wikipedia

    en.wikipedia.org/wiki/Hydrophobe

    In chemistry, hydrophobicity is the chemical property of a molecule (called a hydrophobe) that is seemingly repelled from a mass of water. [1] In contrast, hydrophiles are attracted to water. Hydrophobic molecules tend to be nonpolar and, thus, prefer other neutral molecules and nonpolar solvents .

  8. Surface tension - Wikipedia

    en.wikipedia.org/wiki/Surface_tension

    There are only empirical equations to relate surface tension and temperature: Eötvös: [21] [22] [23] / = (). Here V is the molar volume of a substance, T C is the critical temperature and k is a constant valid for almost all substances. [21] A typical value is k = 2.1 × 10 −7 J K −1 mol − 2 ⁄ 3.

  9. Hydrophobic effect - Wikipedia

    en.wikipedia.org/wiki/Hydrophobic_effect

    In biochemistry, the hydrophobic effect can be used to separate mixtures of proteins based on their hydrophobicity. Column chromatography with a hydrophobic stationary phase such as phenyl-sepharose will cause more hydrophobic proteins to travel more slowly, while less hydrophobic ones elute from the column sooner. To achieve better separation ...